Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — CITY/MO/ST-JOHN

St. John ZIP codes, Missouri

No ZIP code is named for St. John, MO; addresses there use a neighbouring town's name. 3 ZIP codes cover it: 63114, 63121 and 63134. Its area codes are 314 and 557.

USPS city name
0 ZIP codes
Overlapping the city
3 more
Population
6,527
Area codes
314, 557

NANPA lists no telephone rate centre for St. John itself, so these are the area codes of the nearest one, Saint Louis (0.0 miles). A town on an area-code boundary can differ from its neighbour.

St. John in numbers

About 6,527 people live in St. John, in 2,741 households. The median household income is $53,755 a year, 24% below the Missouri median of $70,702 (US: $80,734). The median owner-occupied home is valued at $106,300 (54% below the Missouri median), and median gross rent is $1,159 a month. The median age is 36.0; 19.9% of adults 25 and over hold a bachelor's degree or higher (32.4% across Missouri); the average commute takes 23 minutes.

Population6,527St. John6,527
Households2,741St. John2,741
Median age36.0St. John36.0Missouri39.0US 38.9
Median household income$53,755St. John$53,755Missouri$70,702US $80,734
Median home value$106,300St. John$106,300Missouri$230,300US $332,700
Median gross rent$1,159St. John$1,159Missouri$1,033US $1,413
Bachelor's degree or higher19.9%St. John19.9%Missouri32.4%US 35.7%
Mean commute22.8 minSt. John22.8 minMissouri23.5 minUS 26.4 min
Population density4,584 / sq miSt. John4,584 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place St. John city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes covering St. John

These ZIP codes cover part of St. John but are addressed as somewhere else.

ZIP codes overlapping St. John
ZIP City Type Population Median income Median home
63114 Saint Louis , MO Standard 33,969 $55,870 $116,800
63121 Saint Louis , MO Standard 25,008 $42,701 $95,600
63134 Saint Louis , MO Standard 13,059 $44,680 $94,700

Map of St. John ZIP codes

631146312163134

The ZIP codes of St. John, MO, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near St. John

The nearest larger towns are Overland (15,695 people, 1.8 mi), Berkeley (8,123 people, 2.2 mi) and St. Ann (12,811 people, 2.4 mi).

Towns near St. John
TownPopulationDistance
Breckenridge Hills 4,402 1.2 mi
Woodson Terrace 3,908 1.2 mi
Overland 15,695 1.8 mi
Berkeley 8,123 2.2 mi
St. Ann 12,811 2.4 mi
Normandy 4,239 2.5 mi
Pagedale 2,531 3.2 mi
Olivette 8,645 3.4 mi
University City 34,685 3.5 mi
Northwoods 3,623 3.5 mi
Ferguson 18,213 3.6 mi
Pine Lawn 2,716 4.0 mi
Jennings 12,918 4.5 mi
Dellwood 4,847 4.7 mi

More nearby: every ZIP code in St. Louis County · Missouri ZIP codes

Cite this page

zipcodes.pro. “St. John, MO ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/mo/st-john

Underlying data is public domain or openly licensed — sources, vintages and licences.